1.Tight lens integration for smooth operation: Designed for Canon 24-70mm f/2.8L II USM lens, the aperture group perfectly matches the lens in terms of shape, size and interface. Ensure that it can work properly after installation without affecting the overall performance and image quality of the lens. Whether it is daily shooting or professional creation, it can provide stable and reliable performance. 2.Precise aperture control, excellent image quality: The aperture group achieves accurate aperture control by finely adjusting the opening and closing degree of the aperture blade. This not only helps to obtain the ideal exposure and depth of field effect in different shooting environments, but also reduces optical problems such as aberration and distortion, and improves the clarity and detail expression of the image. Make each of your photos better. 3.Cost-effective, durable and reliable: As a third party product, this aperture set has the same features and effects as the original factory, but at a more affordable price. It is manufactured with high quality materials and processes for high durability and reliability. It can maintain a stable working state even in harsh environments and extend the life of the lens.